#include <stdio.h>
#include "graphics.h"
/*学用circle画圆形*/

void main()
{
    int diver,mode,i;
    float j=1,k=1;
    driver=VGA;
    mode=VGAHI;
    initgraph(&driver,&mode,"");
    setbkcolor(YELLOW);
    for(i=0;i<25;i++)
    {
        setcolor(8);
        circle(310,250,k);
        k=k+j;
        j=j+0.3;
    }
}

